Flex scheduling runs through Week 17 and allows the NFL to promote its best games to a wider audience, while pushing potential prime-time stinkers back into the wider mix of Sunday fare. To sum it up: Everybody wins.

The NFL must announce tweaked Sunday start times at least 12 days prior to that weekend. The only caveat is the final Sunday of the season. Week 17 changes can be made on just six days' notice to ensure an afternoon doubleheader and night game with playoff implications.